Across
- 3. Numbers with more than two factors
- 4. Numbers with only two factors, 1 and itself
- 6. Numbers that cannot be represented as a fraction or a decimal
- 8. Numbers that can be represented as a fraction or decimal
- 9. Numbers divisible by 2
Down
- 1. Natural numbers and zero
- 2. Counting numbers
- 5. Positive and negative numbers
- 7. Numbers that are not divisible by 2
- 8. Any number that exists in the real world